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Automotive lamp

a technology for lamps and motor vehicles, applied in the field of automotive lamps, can solve the problems of visibility degradation, s/n ratio degradation,

Active Publication Date: 2022-05-24
KOITO MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention aims to provide an automotive lamp that can create a light distribution pattern with improved visibility, allowing an in-vehicle camera to easily detect a target. Additionally, the invention seeks to reduce noise effects in the light distribution pattern. Overall, the invention ensures improved driving safety and a better driving experience for the vehicle occupants.

Problems solved by technology

However, in a case of raising the intensity, this leads to degradation of the S / N ratio.
This has the potential to cause degradation of visibility.

Method used

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  • Automotive lamp
  • Automotive lamp
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Examples

Experimental program
Comparison scheme
Effect test

modification 4

[0113]Description has been made in the embodiment regarding processing mainly with a principal objective of providing improved driver visibility. However, the present invention is not restricted to such an arrangement. It is important for automated driving or semi-automated driving to detect a target by means of an in-vehicle camera. Accordingly, the control mode may be adaptively switched so as to allow the in-vehicle camera to easily recognize a target.

second embodiment

[0114]FIG. 10 is a block diagram showing an automotive lamp system according to a second embodiment. An automotive lamp system 100 includes an automotive lamp 200, an in-vehicle ECU (Electronic Control Unit) 102, and a battery 104. The battery voltage VBAT generated by the battery 104 is supplied to the in-vehicle lighting deice 200 as a power supply voltage. The in-vehicle ECU 102 and the automotive lamp 200 are each configured to conform to a protocol such as CAN (Controller Area Network), LIN (Local Internet Network), or the like, which allows these devices to communicate with each other. The in-vehicle ECU 102 controls the on / off state of the automotive lamp 200. Furthermore, the in-vehicle ECU 102 transmits vehicle information such as vehicle speed information, steering information, etc., to the automotive lamp 200. Furthermore, this arrangement allows the automotive lamp 200 to transmit a fail signal or the like to the in-vehicle ECU 102.

[0115]The automotive lamp 200 is config...

first example

[0132]FIG. 13 is a diagram for explaining image processing according to a first example. As a simplest example, the light distribution pattern generator 222 may perform control in which a predetermined target is detected based on the initial image data IMG1, and a portion that corresponds to the target thus detected is shielded (or the light intensity is reduced). Examples of an object to be shielded include an oncoming vehicle, leading vehicle, light-emitting object such as a streetlight, electronic bulletin board, or the like, etc. The oncoming vehicle and the leading vehicle are required to be shielded from the viewpoint of suppressing the occurrence of glare. Also, it is meaningless to emit light from a headlamp to a light-emitting object such as a streetlight, electronic bulletin board, or the like.

[0133]Accordingly, the image processing unit 221 may perform control such that, when a pixel value of the initial image data IMG1 exceeds a predetermined threshold value TH, the imag...

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PUM

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Abstract

An automotive lamp is capable of controlling a light distribution pattern PTN based on an image captured by a camera unit. The automotive lamp is capable of switching between multiple control modes designed with different combinations of the spatial resolution of the light distribution pattern PTN and the update speed of the light distribution pattern PTN.

Description

BACKGROUND OF THE INVENTION1. Field of the Invention[0001]The present invention relates to an automotive lamp.2. Description of the Related Art[0002]When driving at night or through a tunnel, an automotive lamp plays an important role in supporting safe driving. However, in a case in which a wide region ahead of a vehicle is illuminated with high light intensity prioritizing the driver's visibility, this leads to a problem of imparting glare to a driver of a leading vehicle or a oncoming vehicle (which will be referred to as a “forward vehicle”) or a pedestrian ahead of the user's vehicle.[0003]In recent years, the ADB (Adaptive Driving Beam) technique has been proposed in which a light distribution pattern is dynamically and adaptively controlled based on the state of the surroundings of the vehicle. With the ADB technique, the presence or absence of a forward vehicle or a pedestrian ahead of the vehicle is detected, and the illumination is reduced or turned off for a region that c...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B60Q1/14G01J1/42G06V10/141G06V10/60
CPCB60Q1/1423G01J1/4257B60Q2300/054B60Q2300/112B60Q2300/314G01J2001/4247B60Q1/143H04N9/3194B60Q1/0023B60Q2300/41B60Q2300/42B60Q2300/45F21S41/645F21S41/675H04N9/3182G06V20/56G06V10/141G06V10/60
Inventor SHIBATA, YOSHINORI
Owner KOITO MFG CO LTD